Asymmetrical button insert for rock drilling



FIG. 1 is a right side view of an asymmetrical button insert for rock drilling showing our new design;

FIG. 2 is a side view of the asymmetrical button insert for rock drilling taken at 90° of the view of FIG. 1;

FIG. 3 is a front end view of the asymmetrical button insert for rock drilling;

FIG. 4 is a perspective view, taken from the right side and sightly above, of the asymmetrical button insert for rock drilling; and,

FIG. 5 is a perspective view showing the opposite side of the asymmetrical button insert for rock drilling shown in FIG. 4. 

The ornamental design for an asymmetrical button insert for rock drilling, as shown. 